Range Rover County LWB (LH) V8-4.2L (1993)
Compressor Clutch: Customer Interest
A/C - Intermittent ATC Operation
No:
82/03/99/NAS
Ref:
WSM Section 82 TIB 82/01/99/NAS
Issue:
1
Date:
12/10/99
AC Clutch Failure
AFFECTED VEHICLE RANGE:
Range Rover (LP)
Up to XA410503
SITUATION:
INTERMITTENT OPERATION OF THE ATC SYSTEM - COMPRESSOR CLUTCH
A customer may complain that the Automatic Temperature Control (ATC) system does not provide cold air, or provides cold air intermittently. In
addition, the Handbook symbol may illuminate on the ATC display. This may be caused by the failure of the ATC compressor clutch to engage due to an
out of specification gap. The increased gap allows varying degrees of slip at the clutch faces when the ATC engagement is attempted. Low voltage levels
at the compressor clutch connector may have caused this increase in air gap.
RESOLUTION:
COMPRESSOR CLUTCH, OR COMPLETE COMPRESSOR HAS FAILED
A replacement ATC system compressor clutch is now available from Land Rover. Verify that the additional wiring link harnesses described in TIB
82/01/99/NAS have been installed. If the ATC compressor clutch air gap is greater than 0.8mm, the installation of a new ATC compressor clutch should
solve ATC operation problems. In some cases it may be necessary to replace the entire compressor assembly based on criteria outlined in this TIB.
PARTS INFORMATION:
JPE100010
Compressor clutch kit
^
Clutch assembly
Qty. 1
^
Shims
Qty. 4
0.4, 0.5, 0.6, 0.7 mm sizes
^
Circlips
Qty. 2
^
Harness clip
Qty. 1
^
Armature nut.
Qty. 1
NOTE:
Compressor hardware kit JP0100010 is not required for repair. It is available when additional hardware is required because of loss or damage.
JPO100010
Compressor hardware kit
^
Shims
Qty. 4
0.4, 0.5, 0.6, 0.7 mm sizes
^
Clutch rotor circlip
Qty. 1
^
Armature nut.
Qty. 1
WARRANTY CLAIMS:
82.10.89/29
Time 1.95 hrs.
Replace ATC compressor clutch
FAULT CODE: U
Normal warranty policy and procedures apply
REPAIR PROCEDURE
DETERMINE IF ATC COMPRESSOR CLUTCH REPLACEMENT IS NECESSARY
1.
Refer to Technical Bulletin 82/01/99/NAS and verify that additional wiring link harness has been installed.
2.
Refer to Technical Bulletin 82/01/99/NAS and verify that A/C compressor clutch air gap is greater than 0.8mm (0.031 in.).